The hippocampus makes a mental map of a memory, and if you have a similar one, they can overlap, link together or block each other out.

海马体对一个记忆创建一个意念图，如果你有一个类似的，它们会重叠，相互关联或者相互阻碍。

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But building a mental map without technology may improve memory in the long run.

但是从长远考虑，不借助科技构建大脑中地图可以增强记忆。

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Now it seems the scientists underestimated the turtles' abilities, with research showing they use Earth's magnetic field to create a mental map that covers all four points of the compass.

现在看来，科学家似乎低估了海龟的能力。研究表明海龟利用地球磁场为自己确定的地图可涵盖东西南北四个方位。

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Then he spent the next two years committing to memory a mental map of the prison down to its tiniest details.

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The map helps these sports psychologists assess and quantify mental aspects of performance like focus, decision speed, reaction time and stress regulation.

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He said it was similar to the human navigational process, where we build up a "mental map" of our surroundings by recognising familiar sights.

BBC: NEWS | Technology | 'Guessing' robots find their way